linux-kernel - [BUG] skge: a possible sleep-in-atomic bug in skge

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Message-ID: <1e8a8196-f0d1-2a82-3632-b882787c4391@gmail.com>
Date:   Tue, 12 Dec 2017 16:38:12 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     mlindner@...vell.com, stephen@...workplumber.org,
        shemminger@...l.org, shemminger@...ux-foundation.org
Cc:     netdev@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [BUG] skge: a possible sleep-in-atomic bug in skge_remove

According to drivers/net/ethernet/marvell/skge.c, the driver may sleep 
under a spinlock.
The function call path is:
skge_remove (acquire the spinlock)
   free_irq --> may sleep

I do not find a good way to fix it, so I only report.
This possible bug is found by my static analysis tool (DSAC) and checked 
by my code review.

Thanks,
Jia-Ju Bai